IDoSeaDoo
Well-Known Member
Hey guys. So here's my story on this one. Last year, I rescued this 97 GTI from some PA rednecks who took it to some dumbass mechanic who "installed" an sbt engine and immideately seized it by running it without oil. I got the engine in a box, and assembled it with a new top end. Everything looked good, and the ski ran most of the season. Then, in Oct. or so, it suddenly seized as I was riding on the lake.
That year, I found that a bolt had worked itself out of the mag cover, and allowed a few quarts of water in there. Everything was corroded all to hell, so I just winterized it, and left it alone to focus on my boat project.
This year, I ripped the motor apart and found that the two front most crank bearings were totally rusted. Also, the flywheel and stator were rusted pretty badly as well. Everything else seemed fine. I replaced the bearings and threw a pair of new rings on. Got 142 and 150psi compression, sand-blasted and painted the flywheel, and pulled a seemingly identical stator off my 587 and put it on. Now the stator had a different connection from the GTI, so I cut and crimped the 4 wires on there. Everything looked good, it would start right up in the driveway (and water), so went for break in. During breakin, the motor felt really hot, though I could put my hand on it for at least a few seconds. More troubling was that it wouldn't rev past about 4-5k rpm (no tach). If I open it up, the rpms slooooowly climbs up, but if I open the throttle too wide, it just falls on its face. I opened the LSA from 1-1.5 and that didn't change anything. I checked, HSA and it was out 1 turn. I opened it another turn to no effect. Closing it seemed to make it worse, so I just stopped there and went back to the dock. I didn't run it long enough to get any sort of indicator of the plugs (they were just wet, but the porcelain already turned dark). It would start up and idle, but not go past half throttle. In fact, max RPM was achieved at 3/4 throttle (not spinning very fast) and past that it would just die. Pulling choke instantly kills it.
I took it home and opened the carb to find that it was clean. The outside is chalky from salt corrosion from the summer before, but inside it was nice and clean. The jets are the correct size and popoff was 32-35psi. New base gasket, and teh block was tight, no air leaks when I sprayed with soapy water while under pressure.
What could this be? Are the 587-720 stators compatible? They looked totally identical.
That year, I found that a bolt had worked itself out of the mag cover, and allowed a few quarts of water in there. Everything was corroded all to hell, so I just winterized it, and left it alone to focus on my boat project.
This year, I ripped the motor apart and found that the two front most crank bearings were totally rusted. Also, the flywheel and stator were rusted pretty badly as well. Everything else seemed fine. I replaced the bearings and threw a pair of new rings on. Got 142 and 150psi compression, sand-blasted and painted the flywheel, and pulled a seemingly identical stator off my 587 and put it on. Now the stator had a different connection from the GTI, so I cut and crimped the 4 wires on there. Everything looked good, it would start right up in the driveway (and water), so went for break in. During breakin, the motor felt really hot, though I could put my hand on it for at least a few seconds. More troubling was that it wouldn't rev past about 4-5k rpm (no tach). If I open it up, the rpms slooooowly climbs up, but if I open the throttle too wide, it just falls on its face. I opened the LSA from 1-1.5 and that didn't change anything. I checked, HSA and it was out 1 turn. I opened it another turn to no effect. Closing it seemed to make it worse, so I just stopped there and went back to the dock. I didn't run it long enough to get any sort of indicator of the plugs (they were just wet, but the porcelain already turned dark). It would start up and idle, but not go past half throttle. In fact, max RPM was achieved at 3/4 throttle (not spinning very fast) and past that it would just die. Pulling choke instantly kills it.
I took it home and opened the carb to find that it was clean. The outside is chalky from salt corrosion from the summer before, but inside it was nice and clean. The jets are the correct size and popoff was 32-35psi. New base gasket, and teh block was tight, no air leaks when I sprayed with soapy water while under pressure.
What could this be? Are the 587-720 stators compatible? They looked totally identical.
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